Strong Middle Test Engineer (Mobile iOS & Android)

SigmaSoftware2

Warsaw, Masovian Voivodeship, Poland Remote permanent

Posted: April 15, 2026

Required Skills

Job Description

Are you passionate about ensuring flawless mobile experiences across iOS and Android platforms? We are looking for a Strong Middle Test Engineer with deep expertise in mobile QA to join our team.

At Sigma Software, we value innovation, precision, and collaboration. You will be working on cutting-edge mobile solutions with exposure to AI-driven features, ensuring top-quality delivery for end users.

Why join us? We offer professional growth opportunities, a supportive team environment, and the chance to work on projects where your testing expertise truly makes an impact.

PROJECT

The project focuses on developing and maintaining high-quality mobile applications for iOS and Android, incorporating AI-driven functionalities to enhance usability and performance. This role offers the opportunity to work with diverse devices, OS versions, and cutting-edge mobile automation tools

• Plan, design, and execute comprehensive test strategies for mobile applications on iOS and Android platforms
• Collaborate closely with developers, product managers, and designers to ensure high-quality deliverables
• Create and maintain detailed test documentation, including test cases, checklists, and bug reports
• Perform various testing types: functional, regression, smoke, sanity, exploratory, performance, compatibility, localization, and API testing
• Collect and analyze logs to diagnose issues across diverse devices and OS versions
• Support and run existing mobile automation tests; contribute to automation framework improvements
• Participate in Agile sprints, managing priorities and deadlines effectively
• Apply critical thinking to identify edge cases and ensure comprehensive test coverage

• 4+ years of QA experience, with strong focus on mobile testing (iOS & Android)
• Deep understanding of mobile ecosystems, OS versions, device fragmentation, and app architectures
• Proficiency in testing processes and STLC
• Experience with API testing and data formats (YAML, JSON)
• Tools: Jira, Confluence, Figma, Fiddler/Postman, DB IDE, VS Code
• Basic AI knowledge with willingness to grow in this area
• Strong communication skills and ability to work with cross-functional teams
• Self-driven, capable of independently formulating test strategies
• At least an Upper-Intermediate level of English

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